DoesTheMath

ECOSENSE RHE50

0.8 UEF DOE CCD · 2026-09-19
C

Grade C: where this UEF sits among the 414 models in its class, lowest (G) to highest (A). A position, not an official label. How the grade is set

A gas tank, high draw pattern (a larger household, or one where showers and laundry overlap).

If you are checking the ECOSENSE RHE50, a gas tank water heater, it uses 212 therms of natural gas a year. That figure holds at the high draw pattern, the standard daily hot-water usage DOE tests against. It sits 48 therms below its class median of 260 therms, ranking 29th lowest in energy use of 414.


Energy use per year

212 therms a year

Computed by this site from the registry's UEF and the federal test's daily hot-water draw for this draw pattern. What it costs depends on the natural gas rate where you live.

That is below the median of 260 therms for the 414 models registered in the same heater type and draw pattern; it ranks 29 of 414, lowest energy first.

This model: 212 therms

Solid line: this model (212 therms). Dashed line: the class median.

Min 188 therms Median 260 therms Max 277 therms

DOE CCD · 2026-09-19

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What it costs to run where you live

Enter your ZIP to see what this unit costs to run a year at your state’s average natural gas price.


What the registry files

UEF (Uniform Energy Factor) how much hot water you get for each unit of energy the heater uses
0.8 DOE CCD · 2026-09-19 Compared only with other models registered as a gas tank at the high draw pattern.
Draw Pattern the standard daily usage profile DOE tests the unit against
High DOE CCD · 2026-09-19
First Hour Rating how many gallons of hot water the unit can deliver in one hour, starting from a full tank
87 gal DOE CCD · 2026-09-19
Rated Storage Volume the tank size in gallons
46 gal DOE CCD · 2026-09-19

What it costs to install

Not published: Installed cost range

This model's UEF lies outside the range NLR REMDB's cost model was fitted on, and the range is not stretched past it.

The annual energy figure on this page does not depend on this range and is unaffected.


Safety record

No CPSC recall names this model.

Checked against the CPSC recall database. CPSC does not publish a model-level match for this product category, so this list is curated by hand from the manufacturer's recall filings.

CPSC · 2026-09-24

What these figures mean

The 212 therms figure is computed by this site and is not taken from the registry. It combines the model's UEF, the ratio of hot water delivered to energy used, of 0.8 with the DOE test's daily hot-water draw for the high draw pattern. The UEF comes from the DOE CCD registry, retrieved 2026-09-19. The comparison group is the 414 models registered as a gas tank at the high draw pattern. Within that group, this model is in the lowest quarter for energy use. The figure describes the test's daily draw, not a measured household bill. The data does not give this model's gas use at a smaller or larger daily draw. The page on how the annual cost is calculated sets out each step from rating to cost.

The high draw pattern describes a larger household, or one where showers and laundry overlap. For that use, the model lists a first hour rating, the gallons of hot water available in the first hour from a full tank, of 87 gallons. Its rated volume is 46 gallons. A plumber or seller checking a match can compare those two figures with the unit already in place. The same-class replacement search by model number lists other gas tank models at the high draw pattern. A household with lighter daily use falls outside the condition behind the 212 therms figure. For that case, this page has no energy figure, and the 29th place in its class does not carry over.

The running cost is not written in this text. It depends on your state's average residential gas price, applied to the 212 therms a year at the high draw pattern. The page computes it from your ZIP, and the cost calculator for your own ZIP runs that calculation for any ZIP you enter. This model uses 48 therms less than its class median, so the cost gap to a median model also depends on your rate. An installed price range is not published for this model. Its ratings lie outside the range the cost database's model was fitted on, and the range is not stretched past it. The installed price is therefore unknown here.

DOE CCD · 2026-09-19

How this compares

The closest models in the same class — same fuel, type and draw pattern.


Keep going

UEF 0.8 · Grade C Price it on your ZIP